CN216556608U

CN216556608U - Lens assembly of LED lamp and LED lamp

Info

Publication number: CN216556608U
Application number: CN202123040073.8U
Authority: CN
Inventors: 冯文平; 孙晓冰; 吴世民; 杨小明; 黄进凯; 许烁烁
Original assignee: Guangdong Shinland Optics Technology Co ltd
Current assignee: Guangdong Shinland Optics Technology Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-05-17
Anticipated expiration: 2031-12-03

Abstract

The application relates to a lens assembly of an LED lamp and the LED lamp. The lens subassembly of LED lamps and lanterns includes: a light source, a first lens and a second lens; the light source, the first lens and the second lens are arranged on the shell of the LED lamp, the first lens cover is arranged on the light source, and the second lens cover is arranged on the first lens. The income plain noodles and the play plain noodles of first lens and second lens that this application adopted all are continuous free curved surface, so the light direction that the light source jetted out is along with free curved surface gradual change, light takes place once to converge when the light that the light source jetted out passes through first lens, light through first lens is continuous, light through first lens carries out the secondary through the second lens and converges, light through the second lens is still continuous, make the secondary converge the back and form even one deck facula, whole optical efficiency can reach more than 70%, can realize directly beating and wipe the wall and beat the demand of wiping wall one deck facula to one side.

Description

Lens assembly of LED lamp and LED lamp

Technical Field

The application relates to the technical field of lighting, in particular to a lens assembly of an LED lamp and the LED lamp.

Background

A TIR (total internal reflection) lens in an existing LED lamp is formed by combining a reflection part and a refraction part, as shown in fig. 1, both a light incident surface and a light emitting surface are not continuous surfaces, so light passing through the TIR lens from a light source is also discontinuous, so that formed light spots are also uneven, at least two or more layers of light spots are formed, and the light spot edge has light and dark stripes, which cannot meet the requirements of directly rubbing a wall and obliquely rubbing one layer of light spot on the wall.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a lens assembly of an LED lamp and the LED lamp, and is used for solving the problems that in the prior art, a light incident surface and a light emergent surface of a TIR lens are not continuous surfaces, so that light rays of a light source passing through the TIR lens are discontinuous, and light spots are not uniform.

In order to solve the above technical problem, an embodiment of the present application provides a lens assembly of an LED lamp, which adopts the following technical solutions:

a lens assembly of an LED light fixture, comprising: a light source, a first lens and a second lens; the light source, the first lens and the second lens are arranged on the shell of the LED lamp, the first lens cover is arranged on the light source, the second lens cover is arranged on the first lens, and light rays emitted by the light source penetrate out of the shell after being converged through the first lens and the second lens.

Furthermore, the included angle between the edge of the bottom opening of the first lens and the center of the light source is larger than the light-emitting angle of the light source; the included angle between the edge of the opening at the bottom of the second lens and the center of the light source is larger than the light-emitting angle of the light emitted by the light source after being converged by the first lens.

Further, the diameter of the second lens is larger than the diameter of the first lens.

Further, the first lens and the second lens are both convex lenses; or the first lens and the second lens are both Fresnel lenses; or the first lens is a convex lens, and the second lens is a Fresnel lens; or the first lens is a Fresnel lens, and the second lens is a convex lens.

In order to solve the above technical problem, an embodiment of the present application further provides an LED lamp, which adopts the following technical scheme:

an LED light fixture comprising: the casing and as above lens subassembly, the casing includes base and solid fixed ring, gu fixed ring, light source and first lens all locate on the base, light source and first lens are located gu fixed ring is interior, the second lens is located gu fixed ring is last.

Further, the casing still includes the lamp shade, two fixed slots have been seted up to the bottom of lamp shade, gu fixed ring's outer wall is equipped with two fixed columns, the fixed column with the fixed slot rotates to be connected.

Further, an arc-shaped groove is further formed in the bottom of the lampshade, and the arc-shaped groove and the fixing groove are arranged at intervals.

Further, an anti-dazzle cover is arranged at the top of the lampshade.

Further, the casing still includes the mount pad, the mount pad is located on the base, light source and first lens are located in proper order on the mount pad.

Further, the base is a heat sink.

Compared with the prior art, the embodiment of the application mainly has the following beneficial effects: the existing TIR lens is replaced by the first lens and the second lens, the light incoming surface and the light outgoing surface of the first lens and the second lens are continuous free-form surfaces, so that the direction of light rays emitted by the light source is gradually changed along with the free-form surfaces, the light rays are converged once when the light rays emitted by the light source pass through the first lens, the light rays passing through the first lens are continuous, the light rays passing through the first lens are converged twice through the second lens, the light rays passing through the second lens 23 are still continuous, an even layer of light spots are formed after the light rays are converged twice, the edges of the light spots are free of bright and dark stripes, the overall optical efficiency can reach more than 70%, and the requirements of directly wiping a wall and obliquely wiping a layer of light spots on the wall can be met; and after the light rays emitted by the light source are secondarily converged by the first lens and the second lens, the beam angle is reduced, so that the LED lamp can meet the product design requirement of one layer of light spots at a small angle (below 15 degrees), and the small-angle product design requirement which cannot be met by a single lens is met.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is an optical path diagram of a prior art TIR lens;

fig. 2 is a schematic structural diagram of a lens assembly of an LED lamp according to an embodiment of the present invention;

FIG. 3 is an optical path diagram of a lens assembly of an LED lamp according to an embodiment of the present invention;

FIG. 4 is a light distribution curve diagram of a lens assembly of an LED lamp provided in an embodiment of the present invention;

fig. 5 is an illuminance diagram when a light emitting surface of a lens assembly of an LED lamp provided in an embodiment of the present invention is perpendicular to a wall;

FIG. 6 is a front view of an LED lamp provided by an embodiment of the present invention;

FIG. 7 is a cross-sectional view taken at A-A in FIG. 6;

fig. 8 is an exploded view of fig. 6.

Reference numerals: 100. an LED lamp; 10. a housing; 11. a base; 12. a fixing ring; 121. fixing a column; 13. a lamp shade; 131. fixing grooves; 132. an arc-shaped slot; 14. a mounting base; 15. an anti-glare cover; 20. a lens assembly; 21. a light source; 22. a first lens; 23. a second lens.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

The embodiment of the present application provides a lens assembly 20 of an LED lamp, as shown in fig. 2, the lens assembly 20 of the LED lamp includes: a light source 21, a first lens 22, and a second lens 23; the light source 21, the first lens 22 and the second lens 23 are arranged on a shell of the LED lamp, the first lens 22 covers the light source 21, the second lens 23 covers the first lens 22, and light emitted by the light source 21 passes through the first lens 22 and the second lens 23 and then penetrates out of the shell after being converged.

The working principle and the beneficial effects of the lens assembly 20 of the LED lamp provided by the embodiment of the application are as follows: as shown in fig. 3 to 5, in the present application, the first lens 22 and the second lens 23 are adopted to replace the existing TIR lens, and the light incident surface and the light emergent surface of the first lens 22 and the second lens 23 are both continuous free-form surfaces, so that the direction of the light emitted by the light source 21 is gradually changed along with the free-form surfaces, when the light emitted by the light source 21 passes through the first lens 22, the light is converged once, the light passing through the first lens 22 is continuous, the light passing through the first lens 22 passes through the second lens 23 to be converged twice, and the light passing through the second lens 23 is still continuous, so that a uniform layer of light spots is formed after the light is converged twice, the light spot edge has no bright and dark stripes, the overall optical efficiency can reach more than 70%, and the requirements of directly wiping a wall and obliquely wiping a layer of light spots on the wall can be met; after the light rays emitted by the light source 21 are secondarily converged by the first lens 22 and the second lens 23, the beam angle is reduced, so that the LED lamp can meet the product design requirement of one layer of light spots with a small angle (below 15 degrees), and the small-angle product design requirement which cannot be met by a single lens is met.

It should be noted that, when the light emitted from the light source 21 passes through the first lens 22, the light converges, and the formed light spots are continuous light spots, and at this time, the angle and the optical efficiency after converging by the first lens 22 cannot necessarily meet the use requirements, therefore, the embodiment of the present application adopts the design of the combined lens of the first lens 22 and the second lens 23, so that the light passing through the first lens 22 passes through the second lens 23 for secondary convergence, and the angle, the optical efficiency and the light spots after secondary convergence can more easily meet the use requirements, for example, the overall optical efficiency reaches more than 70%, and a layer of light spots with a small angle (less than 15 °) is realized, and the lens assembly 20 of the LED lamp of the embodiment of the present application can be used as a hotel spotlight or other LED lamps with a layer of light spots.

In this embodiment, the lens assembly 20 of the LED lamp may further include a third lens, a fourth lens, and the like, and multiple times of convergence are performed on the light emitted from the light source 21, so that the beam angle of the LED lamp is reduced.

Further, as shown in fig. 2, an included angle a between the bottom opening edge of the first lens 22 and the center of the light source 21 is greater than a light emitting angle of the light source 21, so that light rays emitted from the light source 21 can all enter the light incident surface of the first lens 22, the optical efficiency is ensured, and light spots are uniform; in the embodiment of the present application, the light emitting angle of the light source 21 is 120 °, and the included angle between the bottom opening edge of the first lens 22 and the center of the light source 21 is greater than 120 °; the included angle b between the edge of the bottom opening of the second lens 23 and the center of the light source 21 is larger than the light-emitting angle of the light emitted by the light source 21 after being converged by the first lens 22, so that the light passing through the first lens 22 can completely enter the light-in surface of the second lens 23, the optical efficiency is further ensured, and the light spots are uniform.

Further, the diameter of the second lens 23 is larger than that of the first lens 22; the requirement that the included angle between the edge of the bottom opening of the second lens 23 and the center of the light source 21 is larger than the light-emitting angle of the light emitted by the light source 21 after being converged by the first lens 22 is further met, so that the light passing through the first lens 22 can completely enter the light-in surface of the second lens 23, the optical efficiency is further ensured, and light spots are uniform.

Further, the first lens 22 and the second lens 23 are both convex lenses; or the first lens 22 and the second lens 23 are both fresnel lenses; or the first lens 22 is a convex lens, and the second lens 23 is a fresnel lens; or the first lens 22 is a fresnel lens, and the second lens 23 is a convex lens; the convex lens may be a plano-convex lens, a biconvex lens, a meniscus lens, or the like.

Further, the first lens 22 and the second lens 23 are made of a material having high transmittance such as PC, PMMA, silica gel, or glass.

The embodiment of the present application further provides an LED lamp 100, as shown in fig. 6 to 8, the LED lamp 100 includes: the lens assembly 20 comprises a housing 10 and the lens assembly, wherein the housing 10 comprises a base 11 and a fixing ring 12, the fixing ring 12, a light source 21 and a first lens 22 are all arranged on the base 11, the light source 21 and the first lens 22 are positioned in the fixing ring 12, and the second lens 23 is arranged on the fixing ring 12; the second lens 23 is fixed so that the light emitted from the light source 21 can pass through the first lens 22 and the second lens 23 in sequence.

The working principle and the beneficial effects of the LED lamp 100 provided by the embodiment of the application are as follows: the lens assembly 20 is adopted to replace the existing TIR lens, the light inlet surface and the light outlet surface of the first lens 22 and the second lens 23 are both continuous free-form surfaces, so that the direction of light rays emitted by the light source 21 gradually changes along with the free-form surfaces, when the light rays emitted by the light source 21 pass through the first lens 22, the light rays are converged for one time, the light rays passing through the first lens 22 are continuous, the light rays passing through the first lens 22 pass through the second lens 23 for secondary convergence, the light rays passing through the second lens 23 are still continuous, an even layer of light spots is formed after the secondary convergence, the edges of the light spots are free of light and shade stripes, the integral optical efficiency can reach more than 70%, and the requirements of directly wiping walls and obliquely wiping one layer of light spots on the walls can be met; after the light rays emitted by the light source 21 are secondarily converged by the first lens 22 and the second lens 23, the beam angle is reduced, so that the LED lamp 100 can meet the product design requirement of one layer of light spots with a small angle (below 15 degrees), and the small-angle product design requirement which cannot be met by a single lens is met.

Further, the housing 10 further includes a lamp shade 13, two fixing grooves 131 are formed at the bottom of the lamp shade 13, two fixing posts 121 are arranged on the outer wall of the fixing ring 12, and the fixing posts 121 are rotatably connected with the fixing grooves 131; the direction of the light beam emitted by the LED lamp 100 is changed by swinging the lampshade 13, so that the requirements of a consumer on direct wall wiping and inclined wall wiping are met, and the time cost and the installation cost for the consumer to change the direct wall wiping and inclined wall wiping are reduced.

Further, an arc-shaped groove 132 is further formed in the bottom of the lamp shade 13, and the arc-shaped groove 132 and the fixing groove 131 are arranged at intervals; the arc-shaped slot 132 can prevent collision between the lampshade 13 and the base 11 when the lampshade 13 is swung.

In a preferred embodiment, the bottom of the lampshade 13 is provided with two arc-shaped grooves 132, and the two arc-shaped grooves 132 are arranged oppositely; the lampshade 13 can swing left and right, and the swing range is enlarged.

Further, an anti-dazzle cover 15 is arranged at the top of the lampshade 13; after the light emitted by the light source 21 is secondarily converged by the first lens 22 and the second lens 23, the light is intercepted by the anti-dazzle cover 15, and a layer of uniformly and gradually changed light spots is further formed, so that the anti-dazzle effect is realized.

Further, the housing 10 further includes a mounting seat 14, the mounting seat 14 is disposed on the base 11, and the light source 21 and the first lens 22 are sequentially disposed on the mounting seat 14; to fix the light source 21 and the first lens 22.

Further, the base 11 is a heat sink; the heat of the light source 21 can be led out, and the service life of the light source 21 is prolonged.

Further, the light source 21 is a light emitting diode.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the utility model and do not limit the scope of the utility model. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.

Claims

1. A lens assembly of an LED light fixture, comprising: a light source, a first lens and a second lens; the light source, the first lens and the second lens are arranged on the shell of the LED lamp, the first lens cover is arranged on the light source, the second lens cover is arranged on the first lens, and light rays emitted by the light source penetrate out of the shell after being converged through the first lens and the second lens.

2. The lens assembly of the LED lamp of claim 1, wherein the bottom opening edge of the first lens forms an angle with the center of the light source that is larger than the light emitting angle of the light source;

the included angle between the edge of the opening at the bottom of the second lens and the center of the light source is larger than the light-emitting angle of the light emitted by the light source after being converged by the first lens.

3. The lens assembly of the LED light fixture of claim 1 wherein the diameter of the second lens is larger than the diameter of the first lens.

4. The lens assembly of the LED light fixture of claim 1 wherein the first and second lenses are both convex lenses; or the first lens and the second lens are both Fresnel lenses; or the first lens is a convex lens, and the second lens is a Fresnel lens; or the first lens is a Fresnel lens, and the second lens is a convex lens.

5. An LED lamp, comprising: the lens assembly of any one of claims 1 to 4, the housing comprising a base and a retaining ring, the light source and the first lens all being disposed on the base, the light source and the first lens being located within the retaining ring, the second lens being disposed on the retaining ring.

6. The LED lamp according to claim 5, wherein the housing further comprises a lampshade, two fixing grooves are formed in the bottom of the lampshade, two fixing columns are arranged on the outer wall of the fixing ring, and the fixing columns are rotatably connected with the fixing grooves.

7. The LED lamp according to claim 6, wherein an arc-shaped groove is further formed in the bottom of the lampshade, and the arc-shaped groove and the fixing groove are arranged at intervals.

8. The LED lamp as claimed in claim 6, wherein the top of the lampshade is provided with an anti-glare cover.

9. The LED lamp of claim 5, wherein the housing further comprises a mount, the mount is disposed on the base, and the light source and the first lens are sequentially disposed on the mount.

10. The LED lamp of claim 5 wherein the base is a heat sink.